0000000001311863
AUTHOR
Sax A. Mason
Hydroxo Hydrido Complexes of Iron and Cobalt (Sn−Fe−Sn, Sn−Co−Sn): Probing Agostic Sn⋅⋅⋅H−M Interactions in Solution and in the Solid State
Bis(toluene)iron 9 reacts with Lappert's stannylene [Sn[CH(SiMe3)2]2] (4) to form the paramagnetic bis-stannylene complex [[(eta6-toluene)Fe-Sn-[CH(SiMe3)2]2]2] (10). Compound 10 reacts with H2O to form the hydroxo hydrido complex [(eta6-C7H8)(mu-OH)(H)-Fe-[Sn[CH(SiMe3)2]2]2] (12) in high yield; its solid-state structure has been elucidated by X-ray and neutron diffraction analysis. In agreement with the 1H NMR results, 12 contains a hydridic ligand whose exact coordination geometry could be determined by neutron diffraction. The 1H and 119Sn NMR analysis of 12 suggested a multicenter Sn/Sn/H/Fe bonding interaction in solution, based on significantly large values of J(Sn,H,Fe) = 640+/-30 Hz…
The Role of Order-Disorder Transitions in the Quest for Molecular Multiferroics: Structural and Magnetic Neutron Studies of a Mixed Valence Iron (II)-Iron (III) Formate Framework
Neutron diffraction studies have been carried out to shed light on the unprecedented order-disorder phase transition (ca. 155 K) observed in the mixed-valence iron(II)-iron(III) formate framework compound [NH 2(CH3)2]n[FeIIIFe II(HCOO)6]n. The crystal structure at 220 K was first determined from Laue diffraction data, then a second refinement at 175 K and the crystal structure determination in the low temperature phase at 45 K were done with data from the monochromatic high resolution single crystal diffractometer D19. The 45 K nuclear structure reveals that the phase transition is associated with the order-disorder of the dimethylammonium counterion that is weakly anchored in the cavities …
CCDC 945084: Experimental Crystal Structure Determination
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 945083: Experimental Crystal Structure Determination
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457
CCDC 945082: Experimental Crystal Structure Determination
Related Article: Laura Cañadillas-Delgado , Oscar Fabelo , J. Alberto Rodríguez-Velamazán , Marie-Hélène Lemée-Cailleau , Sax A. Mason , Emilio Pardo , Francesc Lloret , Jiong-Peng Zhao , Xian-He Bu , Virginie Simonet , Claire V. Colin , and Juan Rodríguez-Carvajal|2012|J.Am.Chem.Soc.|134|19772|doi:10.1021/ja3082457